I have a guy that builds SBP 15" in 7 or 8" w/ any offset. They're about $100 per wheel + shipping. He is actually the guy who builds for the big wheel houses, as a subcontractor, so you're cutting out the middleman.

He built for me and every FABO member I have sent to him has been happy.

PM me if you'd like his contact info. I don't want to post, as I'm not sure if he would be in trouble with "them".